Which airport is the most popular layover for flights between Knoxville and Lisbon?

Washington, D.C. (IAD) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Knoxville to Lisbon?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $554.

Which layover airport has the shortest connection time from Knoxville to Lisbon?

Washington, D.C. (IAD) has the shortest average layover time for this route: 1h 37m.

What airlines fly to Lisbon?

American Airlines, United Airlines and British Airways are the top three most popular airlines that fly to Lisbon from Knoxville according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 4 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 9h 52m.

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.

How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

As of January 2026, there are 3 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$507 Cheap Flights from Knoxville to Lisbon in 2026

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2:21 pm - 10:15 am

TYS

LIS

14h 54m

1 stop

11:55 am - 3:15 pm

LIS

TYS

32h 20m

1 stop

$507United Airlines

Wed, Feb 25 - Sun, Mar 1

10:53 am - 10:15 am

TYS

LIS

18h 22m

2 stops

11:55 am - 3:15 pm

LIS

TYS

32h 20m

1 stop

$512United Airlines

Wed, Feb 25 - Sun, Mar 1

9:40 am - 10:30 am

TYS

LIS

19h 50m

1 stop

5:05 am - 10:29 pm

LIS

TYS

22h 24m

2 stops

$539United Airlines

Sun, Apr 5 - Sat, Apr 18

12:21 pm - 11:25 pm

TYS

LIS

30h 04m

2 stops

6:35 am - 11:56 pm

LIS

TYS

22h 21m

2 stops

$565Multiple Airlines

Sun, Apr 5 - Sat, Apr 18

6:10 am - 12:10 pm

TYS

LIS

25h 00m

2 stops

11:05 am - 8:57 pm

LIS

TYS

14h 52m

1 stop

$594British Airways

Sat, Feb 14 - Tue, Feb 24

1:50 pm - 11:30 pm

TYS

LIS

28h 40m

2 stops

5:00 am - 8:37 pm

LIS

TYS

20h 37m

2 stops

$602Lufthansa

Sat, Feb 14 - Tue, Feb 24

9:10 am - 8:10 am

TYS

LIS

18h 00m

2 stops

10:15 am - 8:37 pm

LIS

TYS

15h 22m

2 stops

$609United Airlines

Wed, Feb 25 - Sun, Mar 1

6:10 am - 9:05 am

TYS

LIS

21h 55m

1 stop

11:05 am - 8:57 pm

LIS

TYS

14h 52m

1 stop

$610British Airways

Sat, Feb 14 - Tue, Feb 24

6:21 am - 5:45 pm

TYS

LIS

30h 24m

2 stops

11:05 am - 8:21 pm

LIS

TYS

14h 16m

1 stop

$736British Airways

Sun, Jul 26 - Fri, Aug 7

11:42 am - 10:05 am

TYS

LIS

41h 23m

2 stops

4:25 pm - 9:35 pm

LIS

TYS

34h 10m

2 stops

$760British Airways

Fri, Apr 3 - Sat, Apr 11

United Airlines flights from Knoxville to Lisbon

Our best United Airlines deals on Knoxville to Lisbon flight tickets

United Airlines

Feb 25

TYS7:25 pmKnoxville McGhee Tyson

9h 50m

1 stop

LIS10:15 amLisbon Humberto Delgado

Mar 1

LIS11:55 amLisbon Humberto Delgado

32h 20m

1 stop

TYS3:15 pmKnoxville McGhee Tyson

$507

United Airlines

Feb 25

TYS10:53 amKnoxville McGhee Tyson

18h 22m

2 stops

LIS10:15 amLisbon Humberto Delgado

Mar 1

LIS11:55 amLisbon Humberto Delgado

32h 20m

1 stop

TYS3:15 pmKnoxville McGhee Tyson

$512

United Airlines

Apr 5

TYS9:40 amKnoxville McGhee Tyson

19h 50m

1 stop

LIS10:30 amLisbon Humberto Delgado

Apr 18

LIS5:05 amLisbon Humberto Delgado

22h 24m

2 stops

TYS10:29 pmKnoxville McGhee Tyson

$539

British Airways flights from Knoxville to Lisbon

Our best British Airways deals on Knoxville to Lisbon flight tickets

British Airways

Feb 14

TYS6:10 amKnoxville McGhee Tyson

25h 00m

2 stops

LIS12:10 pmLisbon Humberto Delgado

Feb 24

LIS11:05 amLisbon Humberto Delgado

14h 52m

1 stop

TYS8:57 pmKnoxville McGhee Tyson

$594

British Airways

Feb 14

TYS6:10 amKnoxville McGhee Tyson

21h 55m

1 stop

LIS9:05 amLisbon Humberto Delgado

Feb 24

LIS11:05 amLisbon Humberto Delgado

14h 52m

1 stop

TYS8:57 pmKnoxville McGhee Tyson

$610

British Airways

Jul 26

TYS6:21 amKnoxville McGhee Tyson

30h 24m

2 stops

LIS5:45 pmLisbon Humberto Delgado

Aug 7

LIS11:05 amLisbon Humberto Delgado

14h 16m

1 stop

TYS8:21 pmKnoxville McGhee Tyson

$736

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Wed 2/25

2:21 pm-10:15 am

1 stop14h 54m

Lisbon Humberto Delgado

Sun 3/1

11:55 am-3:15 pm

1 stop32h 20m

$507

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Wed 2/25

10:53 am-10:15 am

2 stops18h 22m

Lisbon Humberto Delgado

Sun 3/1

11:55 am-3:15 pm

1 stop32h 20m

$512

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 4/5

9:40 am-10:30 am

1 stop19h 50m

Lisbon Humberto Delgado

Sat 4/18

5:05 am-10:29 pm

2 stops22h 24m

$539

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 4/5

12:21 pm-11:25 pm

2 stops30h 04m

Lisbon Humberto Delgado

Sat 4/18

6:35 am-11:56 pm

2 stops22h 21m

$565

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 2/14

6:10 am-12:10 pm

2 stops25h 00m

Lisbon Humberto Delgado

Tue 2/24

11:05 am-8:57 pm

1 stop14h 52m

$594

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 2/14

1:50 pm-11:30 pm

2 stops28h 40m

Lisbon Humberto Delgado

Tue 2/24

5:00 am-8:37 pm

2 stops20h 37m

$602

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Wed 2/25

9:10 am-8:10 am

2 stops18h 00m

Lisbon Humberto Delgado

Sun 3/1

10:15 am-8:37 pm

2 stops15h 22m

$609

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 2/14

6:10 am-9:05 am

1 stop21h 55m

Lisbon Humberto Delgado

Tue 2/24

11:05 am-8:57 pm

1 stop14h 52m

$610

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 7/26

6:21 am-5:45 pm

2 stops30h 24m

Lisbon Humberto Delgado

Fri 8/7

11:05 am-8:21 pm

1 stop14h 16m

$736

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Fri 4/3

11:42 am-10:05 am

2 stops41h 23m

Lisbon Humberto Delgado

Sat 4/11

4:25 pm-9:35 pm

2 stops34h 10m

$760

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Knoxville to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest month to fly to Lisbon?

In general, January is the cheapest month to fly from Knoxville to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $502. If you are unable to visit Lisbon during the month of January, then departing from Knoxville during the month February is also very affordable. Most momondo users find prices during this month for around $628.

Can stopping save me money on Knoxville to Lisbon flights?

You could potentially save up to 35% on your flight if you consider stops on a Knoxville to Lisbon flight.

When to book flights from Knoxville to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Lisbon

Fastest flight time	14h 54m
Direct flights	None

The fastest flight from Knoxville to Lisbon takes 14h 54m

There are no direct flights from Knoxville to Lisbon. There are no popular flight routes from Knoxville to Lisbon.

Search flight deals

How far is Knoxville McGhee Tyson to Lisbon Humberto Delgado by plane?
Lisbon Humberto Delgado is 3990.0 mi away from Knoxville McGhee Tyson. 14h 54m is a normal flight duration for this route.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
As of January 2026, there are 3 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Knoxville to Lisbon?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Knoxville to Lisbon is United Airlines (38% of total bookings). The next most popular airlines are British Airways (37%) and American Airlines (24%).

Best airlines flying from Knoxville to Lisbon

Compare and see reviews for airlines that fly from Knoxville to Lisbon with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $477	Free Cancellation	Rating 6.7 7,702 reviews	Search British Airways flights
American Airlines	PriceFrom $602	Free Cancellation	Rating 7.2 11,197 reviews	Search American Airlines flights
United Airlines	PriceFrom $603	Free Cancellation	Rating 7.4 9,205 reviews	Search United Airlines flights

Sintra

Ericeira

Fátima

Nazaré

Setúbal

Estoril

Peniche

Leiria

Oeiras

Sesimbra

Evora

Tomar

Figueira da Foz

Zambujeira do Mar

Batalha

Óbidos

Comporta

Torres Vedras

Sines

Almada

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Lisbon?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Knoxville to Lisbon. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Knoxville to Lisbon with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Knoxville to Lisbon flights to just show those with flexible booking policies.

How can momondo help me find flights from Knoxville to Lisbon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Knoxville.

I’m not ready to book a flight from Knoxville to Lisbon right now. Can momondo alert me if prices change?

Price alerts on flights to Lisbon from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Fly to other destinations from Knoxville

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Flights from Knoxville McGhee Tyson to Key West

Cheap flights from Knoxville to Lisbon from $507

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Lisbon departing on 2/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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See travel insights to Lisbon from

How to get the cheapest flight ticket from Knoxville to Lisbon

What is the cheapest month to fly to Lisbon?

Can stopping save me money on Knoxville to Lisbon flights?

You could potentially save up to 35% on your flight if you consider stops on a Knoxville to Lisbon flight.

What airlines fly to Lisbon?

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Washington, D.C. (IAD) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Knoxville to Lisbon?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $554.

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 9h 52m.

Which layover airport has the shortest connection time from Knoxville to Lisbon?

Washington, D.C. (IAD) has the shortest average layover time for this route: 1h 37m.

When to book flights from Knoxville to Lisbon

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Lisbon

Fastest flight time

Direct flights

How far is Knoxville McGhee Tyson to Lisbon Humberto Delgado by plane?

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

What is the most popular airline from Knoxville to Lisbon?

Best airlines flying from Knoxville to Lisbon

Compare and see reviews for airlines that fly from Knoxville to Lisbon with momondo

Traveling to a place near Lisbon?

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Lisbon?

Can I find flights from Knoxville to Lisbon with flexible booking policies on momondo?

How can momondo help me find flights from Knoxville to Lisbon?

I’m not ready to book a flight from Knoxville to Lisbon right now. Can momondo alert me if prices change?

An easier way to manage your Lisbon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal